Surface Diamond Core Bit For Rock Drilling
It is also recommended for use in drilling harder formations where the available rotary speeds and bit loads are insufficient to use impregnated diamond bits due to drilling equipment limitations.
| Products description |
 This type of bit is primarily recommended for use in drilling relatively soft, abrasive, unconsolidated formations that are not effectively drilled by impregnated diamond bit. It is also recommended for use in drilling harder formations where the available rotary speeds and bit loads are insufficient to use impregnated diamond bits due to drilling equipment limitations.
In most cases, surface set diamond bits will provide higher rates of penetration than in softer formations due largely to the greater degree of exposure of the individual diamond crystals. To choose a right surface set for the formations drilled, we need at least consider the following aspects: diamond size, diamond grade, profile design. |
| Specifications of surface set core bits |
| Parameters of impregnated diamond core bitsDouble tube | ||||
| Standard size | OD(mm) | ID(mm) | Matrix hight(mm) | Bit hardness |
| AQ | 47.6 | 27.0 | 9 | S1-S12 |
| BQ | 59.5 | 36.3 | 9 and 12 | S1-S12 |
| NQ | 75.3 | 47.6 | 9 and 12 | S1-S12 |
| HQ | 95.6 | 63.5 | 9 and 12 | S1-S12 |
| PQ | 122.0 | 85.0 | 9 and 12 | S1-S12 |
| Triple tube | ||||
| BQ3 | 59.5 | 33.5 | 12 | S1-S12 |
| NQ3 | 75.3 | 45.0 | 12 | S1-S12 |
| HQ3 | 95.6 | 61.1 | 12 | S1-S12 |
| PQ3 | 122.0 | 83.0 | 12 | S1-S12 |
| Packaging and shipping |
 Surface Diamond Core Bit for rock drilling Packaging for Surface Diamond Core Bit for rock drilling is in the carton box; Samples will be sent by express, batch products will be sent by air or by sea; 1-5 days for samples and available sizes bits, batch products will be up to the order quantity. |
| Related products |
 Impregnated diamodn bit |  Electroplated diamond bit |  Steel body PDC core bit |
| Why choose us |
1. Xi'an Tydrillbits is engaged in geological drill bits since 2008, our spare parts have walked into more than 40 countries in the world, and feedback is good.
